@misc{indiciae53332329529e,
  title = {Endoscopy today. 1. Rigid endoscopes.},
  author = {G Berci},
  year = {1972},
  doi = {10.1080/00325481.1972.11698129},
  url = {https://pubmed.ncbi.nlm.nih.gov/4259783/},
  note = {Source identifier: 4259783}
}